Window treatment accessory



FIG. 1 is a perspective view of the claimed window treatment accessory;

FIG. 2 is a front view thereof (the rear view, the top plan view and thebottom plan view being mirror images of the front view);

FIG. 3 is a right side view thereof; and,

FIG. 4 is a left side view thereof.

The broken line showing of a cut-away portion of window treatment inFIG. 1 is for illustrative purposes only and forms no part of theclaimed design.

The ornamental design for a window treatment accessory, as shown anddescribed.